Average Weather at Lytton, B. C. Canada

At Lytton, B. C., the summers are warm, dry, and partly cloudy and the winters are freezing and mostly cloudy. Over the course of the year, the temperature typically varies from 20°F to 84°F and is rarely below 3°F or above 95°F.

Based on the tourism score, the best time of year to visit Lytton, B. C. for warm-weather activities is from mid July to mid August.

Temperature

The warm season lasts for 3.0 months, from June 13 to September 11, with an average daily high temperature above 73°F. The hottest day of the year is August 4, with an average high of 84°F and low of 58°F.

The cold season lasts for 3.2 months, from November 14 to February 21, with an average daily high temperature below 41°F. The coldest day of the year is January 1, with an average low of 20°F and high of 30°F.

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Clouds

At Lytton, B. C., the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year at Lytton, B. C. begins around June 13 and lasts for 3.5 months, ending around September 28. On August 3, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy66% of the time, and overcast or mostly cloudy34% of the time.

The cloudier part of the year begins around September 28 and lasts for 8.5 months, ending around June 13. On January 20, the cloudiest day of the year, the sky is overcast or mostly cloudy74% of the time, and clear, mostly clear, or partly cloudy26% of the time.

The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Lytton, B. C. varies significantly throughout the year.

The wetter season lasts 5.6 months, from October 7 to March 26, with a greater than 27% chance of a given day being a wet day. The chance of a wet day peaks at 42% on November 12.

The drier season lasts 6.4 months, from March 26 to October 7. The smallest chance of a wet day is 12% on August 10.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation at Lytton, B. C. changes throughout the year.

Rain alone is the most common for 11 months, from January 15 to December 14. The highest chance of a day with rain alone is 36% on November 1.

Snow alone is the most common for 1.1 months, from December 14 to January 15. The highest chance of a day with snow alone is 14% on January 3.

The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Lytton, B. C. experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year at Lytton, B. C.. The most rain falls during the 31 days centered around November 9, with an average total accumulation of 2.9 inches.

The least rain falls around August 4, with an average total accumulation of 0.8 inches.

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Snowfall

We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Lytton, B. C. experiences significant seasonal variation in monthly liquid-equivalent snowfall.

The snowy period of the year lasts for 5.3 months, from October 20 to March 28, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around December 29, with an average total liquid-equivalent accumulation of 1.2 inches.

The snowless period of the year lasts for 6.7 months, from March 28 to October 20. The least snow falls around July 17, with an average total liquid-equivalent accumulation of 0.0 inches.

The average liquid-equivalent snowfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average rainfall.

Sun

The length of the day at Lytton, B. C. varies extremely over the course of the year. In 2019, the shortest day is December 21, with 8 hours, 2 minutes of daylight; the longest day is June 21, with 16 hours, 25 minutes of daylight.

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 4:55 AM on June 17, and the latest sunrise is 3 hours, 11 minutes later at 8:05 AM on December 31. The earliest sunset is at 4:03 PM on December 12, and the latest sunset is 5 hours, 18 minutes later at 9:20 PM on June 25.

Daylight saving time (DST) is observed at Lytton, B. C. during 2019, starting in the spring on March 10, lasting 7.8 months, and ending in the fall on November 3.

The solar day over the course of the year 2019. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

Humidity

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The perceived humidity level at Lytton, B. C., as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.

The percentage of time spent at various humidity comfort levels, categorized by dew point.

Wind

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed at Lytton, B. C. does not vary significantly over the course of the year, remaining within 0.3 miles per hour of 3.5 miles per hour throughout.

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction at Lytton, B. C. varies throughout the year.

The wind is most often from the west for 1.3 weeks, from May 13 to May 22 and for 1.7 months, from July 10 to September 2, with a peak percentage of 46% on July 23. The wind is most often from the south for 1.6 months, from May 22 to July 10 and for 8.4 months, from September 2 to May 13, with a peak percentage of 47% on June 24.

Wind Direction

The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Best Time of Year to Visit

To characterize how pleasant the weather is at Lytton, B. C. throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Lytton, B. C. for general outdoor tourist activities is from mid July to mid August, with a peak score in the first week of August.

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Lytton, B. C. for hot-weather activities is from mid July to mid August, with a peak score in the first week of August.

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Growing Season

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season at Lytton, B. C. typically lasts for 5.8 months (177 days), from around April 23 to around October 16, rarely starting before April 5 or after May 11, and rarely ending before September 29 or after November 5.

The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Based on growing degree days alone, the first spring blooms at Lytton, B. C. should appear around May 1, only rarely appearing before April 20 or after May 15.

Growing Degree Days

The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.5 months, from May 5 to August 20, with an average daily incident shortwave energy per square meter above 5.7 kWh. The brightest day of the year is July 15, with an average of 6.9 kWh.

The darker period of the year lasts for 3.8 months, from October 22 to February 16, with an average daily incident shortwave energy per square meter below 2.1 kWh. The darkest day of the year is December 26, with an average of 0.9 kWh.

The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Lytton, B. C. are 50.233 deg latitude, -121.583 deg longitude, and 1,640 ft elevation.

The topography within 2 miles of Lytton, B. C. contains extreme variations in elevation, with a maximum elevation change of 3,671 feet and an average elevation above sea level of 1,465 feet. Within 10 miles also contains extreme variations in elevation (8,127 feet). Within 50 miles also contains extreme variations in elevation (9,613 feet).

The area within 2 miles of Lytton, B. C. is covered by shrubs (49%), sparse vegetation (27%), and trees (20%), within 10 miles by trees (63%) and sparse vegetation (18%), and within 50 miles by trees (66%) and sparse vegetation (18%).

Data Sources

This report illustrates the typical weather at Lytton, B. C., based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

Lytton, B. C. has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.

Other Data

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.